Publications by Catherine Maclachlan

Dynamics of CLIMP-63 S-acylation control ER morphology

Kathryn Hess Bellwald, Béatrice Kunz, Graham Knott, Françoise Gisou van der Goot Grunberg, Laurence Gouzi Abrami, Vassily Hatzimanikatis, Patrick Alain Sandoz, Robin Alexander Denhardt-Eriksson, Sylvia Ho, Luciano Andres Abriata, Catherine Maclachlan, Gard Spreemann

A key player in the formation of endoplasmic reticulum sheets is CLIMP-63, but mechanistic details remained elusive. Here authors combined cellular experiments and mathematical modelling to show that S-acylation of CLIMP-63 regulates its function by mediat ...

Nature Portfolio2023

Retromer deficiency in Tauopathy models enhances the truncation and toxicity of Tau

Graham Knott, Evelyne Ruchti, Catherine Maclachlan, Greta Limoni, Brian Donal McCabe, Wei Jiao

Alteration of the levels, localization or post-translational processing of the microtubule associated protein Tau is associated with many neurodegenerative disorders. Here we develop adult-onset models for human Tau (hTau) toxicity in Drosophila that enabl ...

Nature Portfolio2022

Maturation of Complex Synaptic Connections of Layer 5 Cortical Axons in the Posterior Thalamic Nucleus Requires SNAP25

Graham Knott, Catherine Maclachlan

Synapses are able to form in the absence of neuronal activity, but how is their subsequent maturation affected in the absence of regulated vesicular release? We explored this question using 3D electron microscopy and immunoelectron microscopy analyses in t ...

OXFORD UNIV PRESS INC2021

3D Ultrastructure of Synaptic Inputs to Distinct GABAergic Neurons in the Mouse Primary Visual Cortex

Carl Petersen, Graham Knott, Jérôme Blanc, Catherine Maclachlan

Synapses are the fundamental elements of the brain's complicated neural networks. Although the ultrastructure of synapses has been extensively studied, the difference in how synaptic inputs are organized onto distinct neuronal types is not yet fully unders ...

OXFORD UNIV PRESS INC2021

Somatostatin enhances visual processing and perception by suppressing excitatory inputs to parvalbumin-positive interneurons in V1

Carl Petersen, Graham Knott, Catherine Maclachlan, Seung-Hee Lee

Somatostatin (SST) is a neuropeptide expressed in a major subtype of GABAergic interneurons in the cortex. Despite abundant expression of SST and its receptors, their modulatory function in cortical processing remains unclear. Here, we found that SST appli ...

2020

Altered interplay between endoplasmic reticulum and mitochondria in Charcot-Marie-Tooth type 2A neuropathy

Bernard Schneider, Cylia Cloé Rochat, Mary-Claude Croisier-Coeytaux, Manisha Juneja, Omar El Mansour, Catherine Maclachlan, Roman Chrast, Nathalie Marie Géraldine Bernard

Mutations in the MFN2 gene encoding Mitofusin 2 lead to the development of Charcot-Marie-Tooth type 2A (CMT2A), a dominant axonal form of peripheral neuropathy. Mitofusin 2 is localized at both the outer membrane of mitochondria and the endoplasmic reticul ...

National Academy of Sciences2019

Amygdala GluN2B-NMDAR dysfunction is critical in abnormal aggression of neurodevelopmental origin induced by St8sia2 deficiency

Graham Knott, Maria del Carmen Sandi Perez, Olivia Zanoletti, Jocelin Grosse, Elias Georges Gebara, Wei Tang, Alexandre Claude Gustave Bacq, Johannes Gräff, Catherine Maclachlan, Jose Vicente Sanchez Mut, Bianca Ambrogina Silva, Simone Astori

Aggression is frequently observed in neurodevelopmental psychiatric disorders such as schizophrenia, autism, and bipolar disorder. Due to a lack of understanding of its underlying mechanisms, effective treatments for abnormal aggression are still missing. ...

2020

Block Face Scanning Electron Microscopy of Fluorescently Labeled Axons Without Using Near Infra-Red Branding

Graham Knott, Catherine Maclachlan

In this article, we describe the method that allows fluorescently tagged structures such as axons to be targeted for electron microscopy (EM) analysis without the need to convert their labels into electron dense stains, introduce any fiducial marks, or ima ...

2018

Molecular insights into Vibrio cholerae’s intra-amoebal host-pathogen interactions

Graham Knott, Melanie Blokesch, Candice Stoudmann, Sandrine Stutzmann, Charles Ulric V Van der Henst, Tiziana Scrignari, Catherine Maclachlan, Natalia Carolina Drebes Dorr, Audrey Sophie Vanhove

Vibrio cholerae, which causes the diarrheal disease cholera, is a species of bacteria commonlyfound in aquatic habitats. Within such environments, the bacterium must defend itselfagainst predatory protozoan grazers. Amoebae are prominent grazers, withAcant ...

Nature Research2018

The Differential Distribution of RAPTA-T in Non-Invasive and Invasive Breast Cancer Cells Correlates with Its Anti-Invasive and Anti-Metastatic Effects

Paul Joseph Dyson, Graham Knott, Anders Meibom, Stéphane Laurent Escrig, Gianni Sava, Catherine Maclachlan

Nanoscale secondary ion mass spectrometry (NanoSIMS) combined with transmission electron microscopy (TEM) can be a powerful approach to visualize the exact distribution of drugs at the sub-cellular level. In this work, we exploit this approach to identify ...

2017

Mfn1 Deficiency in the Liver Protects Against Diet-Induced Insulin Resistance and Enhances the Hypoglycemic Effect of Metformin

Patrick Descombes, Carlos Canto Alvarez, Richardus Houtkooper, Sylviane Métairon, Joanna Ratajczak, Catherine Maclachlan, Wen Gao

Mitochondrial function can be influenced by mitochondrial shape and connectivity with other cellular organelles through fusion and fission processes. Disturbances in mitochondrial architecture and mitochondrial fusion related genes are observed in situatio ...

American Diabetes Association2016

An intracellular replication niche for Vibrio cholerae in the amoeba Acanthamoeba castellanii

Melanie Blokesch, Charles Ulric V Van der Henst, Tiziana Scrignari, Catherine Maclachlan

Vibrio cholerae is a human pathogen and the causative agent of cholera. The persistence of this bacterium in aquatic environments is a key epidemiological concern, as cholera is transmitted through contaminated water. Predatory protists, such as amoebae, a ...

Nature Publishing Group2015